2013-04-19_REVISION - M1990057

• Permit No: M1990057
• IBM Index Class Name: REVISION
• Doc Date: 4/19/2013
• Doc Name: 110‎(d)‎ PERMIT APPLICATION
• Media Type: D
• Archive: No

The Leadville Mill
1.0 INTRODUCTION & BACKGROUND
M1990-057
INTRODUCTION & BACKGROUND
Page 1 -1
The Leadville Mill (the Mill) is owned by Construction Investments, LLC (CI) and
operated by Union Milling Company, LLC (UMC) with their corporate offices located
in Littleton, Colorado. UMC was formed on September 19, 2008. The Leadville Mill
was formerly included as a facility permitted under Calais Resources, Permit M1990-
057 (the Permit). UMC is permitting the facility as a separate standalone 110(d)
regulated custom ore processing mill which will occupy a 9.9ac permit area.
The facility is located in Lake County, about 1.5mi west of Leadville, Colorado. The
Mill has a Lake County Conditional Use Permit (CUP) granted on September 9, 2011;
and other permits are summarized in the Colorado Department of Reclamation
Mining and Safety ( CDRMS) permit application (Sec. 7.0, Exhibit F). The Mill was
constructed in 1989 and operated through 1991. The Mill has an existing
reclamation bond of $51,700 which was revised on February 7, 2012.
The following mine permit application includes an environmental response to CDRMS
September 30, 2010 Hard Rock, Metal, and Designated Mining Operations
regulations. On November 23, 2011 CDRMS designated the Mill a 110(d) facility
which requires compliance with regulation;
• Sections 6.3.1 through 6.3.12 (Exhibit A -Legal Description; through Exhibit L-
Man Made Structures);
• Section 6.4.21 (Exhibit U- Designated Mining Operation (DMO) Environmental
Protection Plan(EPP));
• Section 6.5. (Geotechnical Stability) and;
• Rule 8 (Emergency Notification by All Operators, Emergency Response Plan
for Designated Mining Operations and Emergency Response Authority of the
Office).
1.1 SITE BACKGROUND
The Mill is an existing gold, silver, lead, zinc, and copper ore processing facility
located in the Northeast Quarter of the Northeast Quarter of Section 33, and the
Southeast Quarter of the Southeast Quarter of Section 28, Township 9 South, Range
80 West of the 6th Principal Meridian, Lake County Colorado. The mill site is a
Version 1.0 April2013